Weaver&#39;s loom



Ju ly 18, 1939. H. A. LERVAD 2,166,415

WEAVER S LOOM Filed June 15, 1937 7 HARALD A'NDERSEN L ERVAD BY WWTTORNf-IYS Patented July 18, 1939 UNITED STATES WEAVER S LOOM HaraldAndersen Lervad, Askov, Vejen, Denmark Application June 15,1957, SerialN6. 148.3%

1 Claim.

The present invention relates to a loom, the advantage of which is thatit is constructed of only a few parts, which can be assembled in aminute by anybody, so that, when not in use, it occupies but very littlespace. Furthermore, the construction of the loom is simplified to suchdegree that everybody can learn to work it in a very short time. This isdue to the Very simple principle of the loom, which is so constructedthat three functions, i. e., adjustment of the width of the warp in thecourse of rolling-up on the beam, change of the partition, and, finally,the ieashing of the threads into cloth, which in a treadle loom areeffected by means of three individual parts of the loom, that is theraddle, the

heddles, and the swing frame with the reed, are in the present loomeffected by one tool only, namely the loose raddle, which is made indifferent finenesses, accordingly as the cloth is to be coarser orfiner.

The drawing shows:

Fig. 1 a loom according to the invention in top-view,

Fig. 2 the same in side-view with some hand wheels removed,

Fig. 3 a section on the line 33 in Fig. 1,

Fig. 4 part of a raddle,

Fig. 5 a cross-section of a roller, called a beam.

The Figs. 4 and 5 are drawn to a larger scale than the other figures.

I and 2 are uniform sidepieces, interjoined with a cross-piece 3 bymeans of bolts with winged nuts 4. In each end of the side-pieces thereare bearings 5 and 6 respectively. In the bearings 5 a roller I, servingas a warp beam, is rotatably mounted. In the bearings 6 arotatableroller I5, serving as a cloth beam, is likewise mounted. An uprightsupport 20 is fixed on each of the sidepieces I and 2 by means of a boltwith winged nut 22 which is movable in a slit 2| in the sidepieces I and2. In. the supports 20, in which are made three notches 23, 24 and 25 araddle with its upper list II] is placed in the center notch 24 whenbeaming the loom. On the ends of this raddle are arranged two balls 28,serving as handles. The raddle consists of a lattice, the connected endsof which are fixed in the upper list I0 and the lower list 26; Thelattice consists of a series of equally wide lattice bars II, eachcontaining a hole with rounded edges I2. Every second of the warpthreads are carried through an interspace l3 between the lattice barsII, whereas every other thread is carried through a corresponding holeI2. When in this way the threads have been carried through the raddlethe width of the cloth to be made, the foremost ends are knittedtogether in pairs and hooked in the notches 8 on teeth 8, which arearranged in the warp beam I, after which against either side of theteeth 8 stretching pieces 9 are placed, and secured by screws 9. Thestretching pieces 9 serve to form an even underlayer for the warpthreads, which are rolled on the warp beam 'i, while the raddle acts inits first function as a raddle, dividing in the course of rolling-up thewarp threads evenly on the beam in the width of the cloth to be made.After this the hindmost ends of the warp threads are tied together inpairs and hooked on to the teeth of the cloth beam I5, and thestretching pieces I6 are placed on either side of the teeth I4. Now theshed or partition in the warps is formed by grasping the balls on theupper lists of the raddle and placing them in the topmost notch 25.Thereby the threads, which pass through the holes I2 of the raddle ID,are raised to the uppermost position, thus forming a shed through thethreads which pass through the interspaces of the raddle I 3. Theopposite shed is formed by placing the upper list of the raddle in thelowest notches 23, by

which the threads through the holes I2 again form a shed through thethreads which pass through the interspaces of the raddle I3. From thisit appears that the threads passing through the interspaces of theraddle I3 always remain standing in the same position, whereas thethreads passing the holes of the raddle I2 are moved alternately up anddown, thereby forming the shed necessary for the weaving. Thereby theraddle exercises its function, replacing the heddles necessary in thetreadle-looms. Through the consecutively formed sheds the weft, alsocalled the shoot, is carried by means of the shuttle, and every timethis is done the balls on the upper list of the raddle are grasped, andthe shoot is pushed forward by the raddle. Thereby the raddle exercisesits third function, acting in the same way as the swing frame with thereed of the treadle-looms. To produce the necessary tightening of thewarp in the course of weaving, A

ratchet wheels I! are fixed to the warp beam "I and the cloth beam I5,with which some rotatable pawls I8, arranged on the sidepieces I and 2,can cooperate. On the warp beam I and the cloth beam I5 hand wheels I9are placed outside the r I claim:

A loom comprising a frame having a pair of longitudinal side members,bearings supported at the ends of said side members, a warp beam rollermounted in the bearings at one end of the frame, said warp beam rollerhaving a series of teeth adapted to receive the ends of the warp threadsto be rolled on said beam prior to weaving, a cloth beam roller mountedin the bearings at the other end of the frame adapted to receive thecloth to be woven, a combined raddle heddle and swing frame positionedbetween said warp and cloth beams, said combined raddle heddle and swingframe comprising a lattice frame having a plurality of alternatevertical slots through which alternate warp threads are passed andvertical bars each having an intermediate hole through which the otherwarp threads are passed, each side of the frame having a longitudinalslot formed therein, an upright support slidingly adjustably carried bythe slot in each side of the frame and each support provided with aseries of three vertically spaced notches, a supporting rod carried bythe upper portion of said lattice frame and adapted to be positioned inthe intermediate series of notches for threading said loom, in the upperseries for raising the warp threads passing through the holes in saidbars and in the lower series for lowering the warp threads passingthrough the holes in said bars, and means for securing said uprightsupports in adjusted positions.

HARALD ANDERSEN LERVAD.

